A truly special product by a legendary Japanese chalk-maker: Kitpas crayons are waxy, pigmented, totally non-toxic, and actually washable. They can be used on paper, windows, bath tubs, even walls (again, they're washable!), though we don't recommend it.
Since 1937, Nihon Rikagaku has been manufacturing dustless chalks made from recycled scallop shells. In fact, 60% of the chalks used in Japanese schools are made by Nihon Rikagaku! With an unparalleled commitment to improving the society they operate within, more than 70% of Nihon Rikagaku’s workforce is made up of persons with intellectual disabilities.